The worst epidemic in American history killed over 600,000 Americans during World War I.
The effort of pioneering researchers to conceive babies through in vitro fertilization.
The remarkable story of how a railroad was built connecting California to the East.
The historic journey of Apollo 8 captivated the world in 1968 -- a bright spot in a year marked by political assassinations, race riots, and the Vietnam War.
The grave truth behind modern forensics was discovered in 1920s New York.
The contradictory history of a dam that became a statement of American power and prestige.
George Eastman introduced the Kodak and Brownie camera systems and transformed photography into something anybody could do.
The unusual life of David Vetter, who lived permanently inside a germ-free environment due to severe combined immunodeficiency.